In 2017, 10 of the world's billionaires — fewer than 1% — are black, down from 12 last year, reports Forbes contributor Mfonobong Nsehe. Three of the 10 are women. All but one, Isabel Dos Santos, are billed by Forbes as self-made.

To compile the full list, Forbes uses stock prices and exchange rates to estimate the net worths of the world's richest people, and then ranks them based on their wealth. This year's list was created using data from February 17, 2017, but Forbes also maintains a current snapshot of the world's billionaires, updated daily.

Mohammed Ibrahim: $1.14 billion

Ben Curtis/AP

Self-made billionaire, 71 year-old Mohammed Ibrahim, was born in Sudan and now lives in the United Kingdom, where he is the 11th wealthiest citizen. Ibrahim became a billionaire after selling his telecommunications company, Celtel International, in 2005, according to Forbes. Now he spends much of his time focusing on improving the lives of African citizens through the Mo Ibrahim Foundation.

Michael Jordan: $1.31 billion

Yvette Prieto and Michael Jordan.Chuck Burton/AP

One of the most successful athletes of all time, Michael Jordan, 54, made a total of $90 million as a basketball player, according to Forbes. Since retiring from the NBA, he has amassed the majority of his wealth through his relationship with Nike and other corporate partnerships. Jordan, who also owns a stake in the Charlotte Hornets, now makes more in one year than he did during his entire professional basketball career, as Business Insider's Cork Gaines reported.

Folorunsho Alakija: $1.61 billion

AP

Folorunso Alakija, vice chair of Nigerian oil company Famfa Oil, got her start in business as the founder of an elite Nigerian fashion label, according to Forbes. The 66 year-old self-made billionaire lives in Lagos, Nigeria and has four children. Her son, Folarin Alakija, recently married Iranian model Nazanin Jafarian Ghaissarifar, in a lavish, multi-million dollar wedding, which took place in England.

Patrice Motsepe: $1.81 billion

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South-African Patrice Motsepe, 55, founder of the mining company African Rainbow Minerals, was Africa's first black billionaire. The father of three was also the first African to sign Bill Gates' Giving Pledge, promising to donate at least half of his wealth to charity. Motsepe and his wife Precious created the Motsepe Foundation in 1999 to help create new jobs, support education, and improve the lives of children, the unemployed, and the disabled, among others.

Isabel Dos Santos: $3.1 billion

Isabel Dos Santos and Sindika Dokolo.Ian Gavan / Getty

The wealthiest of the three woman to make this list, and the youngest black billionaire in the world, 44 year-old Isabel Dos Santos is the daughter of Jose Eduardo dos Santos, who has been president of Angola since 1979. Her fortune comes from multiple investments, many of which are controversial and linked to her father, according to Forbes, although Dos Santos maintains her investments are private and independent.

Mike Adenuga: $6.1 billion

Afolabi Sotunde/Reuters

Nigerian Mike Adenuga, 64, is chairman of telecommunications company Globacom, which has 36 million subscribers, as well as the majority owner of Lagos-based oil company Conoil, according to Bloomberg. While earning an MBA from Pace University in New York, he drove a taxi to pay the bills. Today, Adenuga, who has seven children, is the second-wealthiest man in Nigeria, according to Forbes.

Mohammed Al Amoudi: $8.4 billion

Mohammed Hussein Al Amoudi, 71, moved from Ethiopia to Saudi Arabia when he was 19, and began amassing his fortune from government-contracts in real estate and construction, according to Bloomberg. Now, the father of eight owns businesses across multiple industries, including oil, mining and agriculture, in Saudi Arabia, Ethiopia and Sweeden.

Aliko Dangote: $12.2 billion

Halima and Aliko Dangote.Ben Gabbe/Getty

The wealthiest man in Africa is Nigerian Aliko Dangote, 60, who has been CEO and president of Dangote Group for 35 years. The majority of his fortune comes from a more than 90% stake in Dangote Cement, Africa's largest producer of cement, which is traded on the Nigerian Stock Exchange. He is also an active philanthropist, serving as chairman of The Dangote Foundation, which focuses on education, agriculture and health-related initiatives.